Feature:1. 9 in 1: Multifunctional air quality detector real-time monitoring of CO2 concentration, CO concentration, TVOC value, HCHO value, PM2.5/PM1.0/PM10 value, temperature and relative humidity in the air.2. Clear Display: Large digital screen with backlight, clear and easy to read, support alarm function. Multiple display modes are available, you can switch according to your needs.3. High Accuracy: Using air semiconductor sensor, infrared PM2.5 sensor and electrochemical sensor, plus high-performance chip, detection is more accurate, higher accuracy, and the accuracy can reach 1PPM.4. Built-in Battery: Equipped with 2000mAh high-capacity rechargeable battery, low power consumption and long endurance, no need to replace the battery frequently.5. Quick Heat Dissipation: With multiple ventilation holes, which accelerate the convection between the air and the detector, to achieve effective detection and provide a nice heat dissipation effect.6. Wide Application: Lightweight and portable, it is suitable for home, office, school, warehouse, agricultural planting, etc. No need to calibrate at startup, automatic monitoring.Specification:Item Type: Air Quality TesterColor: WhiteMaterial: ABSDisplay: 2.8 Inch TFT ScreenCO2 Detection Ranges: 400-6000PPM, 5015%PPMCO2 Detection Accuracy: 1PPMCO Detection Ranges: 0-500PPMCO Detection Accuracy: 1PPMTVOC Detection Ranges: 0-2.0mg/m3HCHO Detection Ranges: 0-0.6mg/m3PM2.5 Detection Ranges: 0-1000ug/m3PM2.5 Detection Accuracy: 1ug/m3PM1.0 Detection Ranges: 0-1000ug/m3PM10 Detection Ranges: 0-1000ug/m3Temperature Detection Ranges: -10-50, 2Humidity Detection Ranges: 0-99%RH, 3%RHInput Voltage: 5V, 1ABattery: Built in 3.7V, 2000mAh Li ion BatteryWorking Current: 260mAPower: 1WItem Size: 89 x 82 x 36mm/ 3.5 x 3.2 x 1.4inItem Weight: 160g/ 5.6oz.Package List:1 x Air Quality Tester1 x USB Cable1 x Manual